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Genetic study of the production of sexually dimorphic cuticular hydrocarbons in relation with the sex-determination gene transformer in Drosophila melanogaster

Published online by Cambridge University Press:  02 April 2002

FABRICE SAVARIT  and
JEAN-FRANÇOIS FERVEUR
FABRICE SAVARIT
Affiliation:
LEEC UPRES-A CNRS 7025, Université Paris 13, 93430 Villetaneuse, France
JEAN-FRANÇOIS FERVEUR
Affiliation:
CNRS-UMR 5548, Faculté des Sciences, Université de Bourgogne, 6 Blvd Gabriel, 21000 Dijon, France
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Abstract

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In Drosophila melanogaster, the main cuticular hydrocarbons (HCs) are some of the pheromones involved in mate discrimination. These are sexually dimorphic in both their occurrence and their effects. The production of predominant HCs has been measured in male and female progeny of 220 PGal4 lines mated with the feminising UAS-transformer transgenic strain. In 45 lines, XY flies were substantially or totally feminised for their HCs. Surprisingly, XX flies of 14 strains were partially masculinised. Several of the PGal4 enhancer-trap variants screened here seem to interact with sex determination mechanisms involved in the control of sexually dimorphic characters. We also found a good relationship between the degree of HC transformation and GAL4 expression in oenocytes. The fat body was also involved in the switch of sexually dimorphic cuticular hydrocarbons but its effect was different between the sexes.

Type
Research Article
Information
Genetics Research , Volume 79 , Issue 1 , February 2002 , pp. 23 - 40
Copyright
© 2002 Cambridge University Press